nano my_post.md
cargo run -- submit-post --content-path my_post.md --author @yuandj
cat post_template.txt
cat blockchain.json | jq '.pending_transactions'
cargo run -- mine --miner d9b32afc14a94948dec6600727f70e8fc7a36529cb81f005566fe82fe2810036
echo "export POST_HASH=$(cat blockchain.json | jq -r '.chain[-1].transactions[0].hash')"
